import pymysql

class BD:
    def __init__(self):
        self.conn = pymysql.connect(
            host='localhost',
            port=3306,
            user='root',
            password='123',
            charset='utf8',
            db='workf',
            cursorclass=pymysql.cursors.DictCursor)
        #游标
        self.cursor = self.conn.cursor()

#添加，修改，删除
    def insert(self,sql):
        self.cursor.execute(sql)
        self.conn.commit()
#查询一条记录
    def find(self,sql):
        self.cursor.execute(sql)
        return self.cursor.fetchone()

#查询多条记录
    def findall(self,sql):
        self.cursor.execute(sql)
        return self.cursor.fetchone()

db1 = BD()